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DPU1U SERIES
INSTALLATION & OPERATING MANUAL
P O W E R I N G T E C H N O L O G Y
Document Number: DPU1U-MAN Rev. 4
dpu1u-man-rev1-0719.indd
10.0 UNPACKING AND INSPECTION
10.1
This power combination panel was carefully tested, inspected and packaged for shipment
from our factory. The unit and circuit breakers are shipped separately. Upon receipt of the
unit it should be carefully unpacked and inspected for any damage in shipment.
10.2
If there is evidence of damage, do not attempt to test the unit. The freight carrier should
be notified immediately and a claim for the cost of the rectifier system should be filed with
the carrier for direct reimbursement. Be sure to include the model and serial number of the
damaged unit in all correspondence with the freight carrier. Also save the shipping carton
and packing material as evidence of damage for the freight carrier’s inspection.
10.3
UNIPOWER will cooperate fully in case of any shipping damage investigation.
10.4
Always save the packing materials for later use in shipping the unit. Never ship the rectifier
system without proper packing.
11.0 INSTALLATION
11.1 Mounting.
This combination panel can be mounted in either 19- or 23-inch racks by using
the supplied reversible brackets. Mount it from the front of the rack using the correct offsets
to align with existing rack-mounted equipment.
The bracket offsets are every quarter inch from front to back.
11.2
Power Connections.
Input connections should be made with one- or two-terminal crimp
type lugs using copper wire size from no. 1 to 8 AWG, depending on current and wire loop
distance. See Sections 9.2 and 9.3. Output connections are made to the barrier terminal
strips. See Section 9.4 and Figure 10.
11.3
Alarm Connections.
Form C relay contact output connections are made to the spring clamp
terminal blocks. See Section 9.5. The chassis ground connection is made to the no. 8-32
stud. See Section 9.6. This safety ground connection should be made before operating the
panel.
11.4
Checking Connections.
Carefully check the polarity of input connections to the combination
panel and output connections to the load before operating the panel. Reverse connections
will not harm the combination panel as it is POLARITY NEUTRAL. However it may cause
serious harm to the load. Check to make sure that the chassis safety ground connection is
made. Make sure that all connections are clean and secure to minimize contact resistance.
11.5
Rear Safety Cover.
Once all of the above have been completed, fit the clear plastic safety
cover to the back of the unit using the supplied mounting studs and screws. Instruction for
fitting the mounting studs the panel are included in the accessory kit.
